Paper-coating machine.



PATENTED APR. 28, 1903.

C. F. W. SGH-UMAGHER. PAPER GOATING MACHINE.

APPLICATION FILED MAR. 20. 1901. RENBWEDSEPT. 16. 1902.

N0 MODEL.

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CHARLES F. IV. SOl-IUMACHER, OF KALAMAZOO, MICHIGAN.

PAPER COATING MACHINE.

SPECIFICATION forming part of Letters Patent No. 726,358, dated April28, 1903.

Application filed March 20, 1901. Renewed September 16, 1902- Serial No,123,643. (No model.)

its application to an ordinary paper-machine;

and Fig. 2 is a detailed side view of one of the brushes and means forreciprocating the same.

The main object of my invention is to provide ordinary paper-machineswith means whereby the paper may be surfaced or coated with the ordinaryglue and clay coating material used for coating paper, thus avoiding theexpense of two operations and effecting a saving in machinery and infloor-space in the mill; and to this end my invention consists in theconstruction, arrangement, and combination of parts, all as hereinafterdescribed and claimed.

In the drawings, 2 3 represent large hollow rollers or drums heated,preferably, by steam entering the hollow axis or shafts 4 5, and 6 7represent primary or leading rolls, from which the paper is led to thecoating-machine, and 8 9 represent terminal rolls, by which the paper isled away from the coating-machine.

10 represents a trough or fountain for the coating material, which isapplied to the upper surface of the paper 12 by the two rolls 13 14;,the latter acting in conjunction with the supporting-roll 15.

The paper, having passed through that portion of the paper-machine atthe left of the drawing and having thus been sufficiently dried, passesfrom the roll 7 between the rolls 1 1c 15 and receives on its uppersurface athick coating of the glue and. clay mixture,

spread the coating material upon the paper in the well-known manner.From the brushes and endless belt or apron the paper passes to theheated drum 2 and passes nearly around the same to the heated roll23,thence around this roll, back beneath the rolls 24 25,adjacent to thedrum 2, so that direct heat is applied and air-drying takes placebeforethe opposite supfjceof the paper receives its coating material. Thepaper is now coated upon its under surface from the trough or fountain26, through the rolls 27. 28, the latter operating against the top rollFrom rolls 28 29 the paper passes beneath the endless belt or apron 30,between it and one or more spreadingbrushes 31, which, like the brushes19, are reciprocated by the rods 32, connected to the eccentrics 33 onthe shaft 3%. The paper then passes to the heated drum 3, with its firstpoated surface next tothe drum over the roll 35. The paper passes nearlyaround the drum 3 and receives direct heat'to the roll 36, thence aroundthis roll, back adjacent to the heated drum 3, over the rolls 37, 28,and 39 to the other rolls 3 9 of the paper-machine, thus gainingair-drying to set the coating material sufticiently to run on theregular paper'machine for final drying.

4O 41 represent a series of pipes or conduits arranged adjacent to thedrums 2 3 and formed with perforations or slits for directinga blast ofair upon the paper on the drums. These conduits are to be connected toany suitable blower or air-pressure apparatus. (Not neces sary to beshown.)

' In case only one surface of the paper is to be coated theunder-surface mechanism may be thrown out of action or omitted in building the machine.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a machine for coating paper, the combination of a fountain forcoating material, rolls for applying the coating material to the paper,means for spreading the coating ma-- terial on the paper, a heated drumon which the coated paper passes, and a series of rolls beneath theheated drum, the uppermost of which holds the paper in contact with theheating-drum, and around which it passes back against the other rolls ofthe series,

which latter rolls space the paper from the heated drum, substantiallyas and for the purposes set forth.

2. In a machine for coating paper, the combination of a fountain forcoating material, rolls for applying the coating material to one side ofthe paper, means for spreading the coating material'on the paper, aheated drum on which the coated paper passes,rolls beneath the heateddrum for holding the paper in contact with the drum and for reversingthe paper and holding the reversed portion away from, but adjacent to,the heated drum, another fountain for coating material, rolls forapplying coating material to the opposite side of the paper from saidlast-mentioned fountain, means for spreading the coating material onsaid opposite side of the paper, another heated drum and a series ofrolls above the said last-mentioned heated drum, one of which holds thepaper in contact with the drum and around which the paper passes back tothe other rolls in the series, which latter space the paper from thedrum, substantially as and for the purposes set forth.

CHARLES F. W. SCHUMACHER.

iVitnesses:

A. H. PLUMMER, WILLIAM STEWART.

